<template>
    <div>
        <button>展开/折叠侧边栏</button>
        <div>navbar</div>
    </div>
</template>

<script>
export default {
    data() {
        return {
            
        }
    },
    methods: {

    }
}
</script>

<style scoped>
div{
    background-color: gray;
}
</style>